Scientia Agricultura Sinica ›› 2006, Vol. 39 ›› Issue (02): 295-299 .

• PLANT PROTECTION • Previous Articles     Next Articles

Analysis on the Rust Resistance Genes of a New Wheat Germplasm YW243 by Molecular Markers

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  • Received:2005-08-20 Revised:2005-12-04 Online:2006-02-10 Published:2006-02-10

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Abstract: 【Objective】 A new wheat line YW243 is a recently developed new germplasm with multi-resistance to wheat stripe rust, stem rust, leaf rust, wheat yellow dwarf and powdery mildew. In this study, the gene composition of the stripe and stem rust resistance of YW243 was analyzed. In order to clarify the sources of the rust resistance genes of YW243, YW243 and its parents, such as Fengkang 8, Fengkang 13, Shan 7859, Suwon 11 and Heine Hvede, were analyzed by the molecular markers of the resistance genes . 【Method】 The composition and the sources of the stripe and stem rust resistance genes of YW243 were analyzed by using PCR markers of Yr9, YrX, Yr2, Yr1, Sr31 and SDS-PAGE. 【Result】 YW243 possessed at least four stripe rust resistance genes of Yr1, Yr2, Yr9 and YrX, one stem rust resistance gene Sr31. Shan 7859 and Fengkang13 are the sources of Yr1 in YW243, Shan7859, Fengkang 8 and Fengkang13 are the sources of Yr2 in YW243, Fengkang 13 is the source of YrX of YW243. Fengkang 8 and Shan 7859 are the sources of Yr9 and Sr31 of YW243. 【Conclusion】YW243 is a good resistance germplasm for wheat breeding in the future.

Key words: Wheat (Triticum aestivum Linn.), YW243, Molecular marker, Rust resistance gene

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